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Old 04-13-2018, 01:40 PM   #1
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Oil Cooler R&R/Coolant Drain

Getting ready to replace the original oil cooler on my '02 base with the "S" model cooler. Pretty straight forward procedure. My question is this - how much coolant needs to be drained to bring the level below the cooler and is it possible to remove that amount without draining the whole system?
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Old 04-13-2018, 03:00 PM   #2
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I think you will find that you can't just drain coolant out of the oil cooler/engine. When you pull the drain plug and or hose, fluid will drain from everything equally. I just flushed my system and that is my experience.

If you drain into a clean container, you can refill with what came out. You might do a visual and strain it as you put it back in. Also, note that the drain plug has a crush washer under it that should be replaced and torqued to 7-11 ft lbs. Think oil drain plug but smaller. Verify by your year/car.

After thought, I suppose you could try pinching off the the three hoses with clamps that go into the block. I always thought that might weaken/damage them.

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Old 04-13-2018, 04:16 PM   #3
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As soon as you lift the old cooler off of its O-rings, push a plastic bag under it to catch fluid. I drained a lot from the normal spots underneath and still had a lot spill.
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Old 04-13-2018, 04:26 PM   #4
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It's a good time to replace the oil. You can't stop some water from getting into the oil. I've done it twice and got water into the oil both times.
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Old 04-13-2018, 05:36 PM   #5
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It's a good time to replace the oil. You can't stop some water from getting into the oil. I've done it twice and got water into the oil both times.
Good point - I was going to drop the sump plate at some point and install an EBS baffle. Good time to do that.
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Old 04-13-2018, 10:18 PM   #6
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Good point - I was going to drop the sump plate at some point and install an EBS baffle. Good time to do that.
I did the Pelican kit for my baffle upgrade. For the $$$ itís excellent and has all the goodies. Proper sealant for tray being one of them!
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